Eocene flora of western America /
Sanborn, Ethel I.(Ethel Ida),1883-Comtock flora of west central Oregon.
Potbury, Susan S.(Susan Stevens).La Porte flora of Plumas County, California.
MacGinitie, H. D.(Harry Dunlap),1896-Flora of the Weaverville beds of Trinity County, California.
Washington, D.C., Carnegie Institution of Washington,
1937.
Descriptive letterpress on versos facing most of the plates.
Each paper also published seperately.
I. The Comtock flora of west central Oregon / by Ethel I. Sanborn -- II. The La Porte flora of Plumas County, California / by Susan S. Potbury -- III. The Flora of the Weaverville beds of Trinity County, California / by Harry D. MacGinitie.
Paleobotany
Paleobotany
Paleobotany